Prokofiev: 4 Études, Op. 2: No. 4 in C Minor

Recording identifiers

ISRC

GBAYC9903171

Release date of the album this recording appears on

2009-07-06

CopyrightID (CopyrightChains transaction hash)

0x6b696eceab79c67806ff328d72c83e37b6f130517544a2bbc5382bf86a06f795

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T09:57:33Z

Bitcoin block

960240

Canonical record hash

sha256:130809e39110cb26960e3505924ecd01a63e1cb2ae8b392bdd66c7b1c75b435f

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBAYC9903171

What this proof establishes

This recording was released in 2009, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and ISRC is the stable recording-level bridge from that source corpus to the authoritative cc-db-prod track record.

CopyrightChains and Bitcoin OpenTimestamps make the exact committed record independently verifiable today. The cryptographic proof does not by itself establish authorship or ownership of the underlying recording.

Read the complete pre-generative-AI provenance and verification method.